So thanks to all who replied.
Here is the cause and resolution:
The wire that supplies power to the motors on the wardrobe life had come loose from the clip that secures them under the slide. When I opened the slide it was fine but when I closed the slide the wire caught on the underside of the slide out and it pulled loose causing a short. The repair man reran the wire correctly and replaced the motor that got fried because of this.
Quote the dealership "This will not happen again".